Box stitching machine



SQM. 6, 5 N. A. YOUNG ET AL BOX STITCHING MACHINE 2 Sheets-Sheet 1 FiledNOV. 25, 1946 BY e 4 ATORNEY.

N. A. YOUNG ET AL BOX STITGHING MACHINE 2 Sheets-Sheet 2 INVENTORS.

m Z R. T BUM/w m M T Z M M Filed Nov. 23, 1 946 Patented Sept. 6, 19492,481,057 BOX s'rrromNG MACHINE Nicholas A. Young and Peter iii-chm,Racine,

Wis., assignors Racine, Wis.

to American Machine Works,

Application November 23, 1946, Seial No. 711,862 1 Claim. 1-15) Ourinvention refers to wire stitching machine and it has for its primaryobject to provide controls for manually shifting the clinching post,followed by manually closing an electric circuit for starting the stapleforming and stitching mechanism, whereby boxes or fiber containers maybe finished by an operator feeding the box accurately and in a simplemanner to stitch the same along the edge lines of said box to completeit.

A further object of our invention is to provide a foot actuated stirrupfor shifting the clinch ing post from its idle position to its workingposi tion, an alinement with the stitching mechanism and thereafterthrough a foot pedal manipulation, carried by the stirrup, an electriccircuit is closed for actuating the stitching device, it beingunderstood that a switch so actuated is caged within the stirrup wherebyit is protected against inadvertent closure. In other words, twodistinct foot operations are required when the machine is put intomotion.

The stitching machine, to which my invention is applied, is of astandard type now in usage, such, as for example, as is disclosed inPatent No. 2,347,908, embodying certain specific features not used byapplicant.

With the above and other objects in view, which will appear as thedescription proceeds, the invention resides in the novel construction,combination, and arrangement of parts, substantially as hereinafterdescribed, and more particularly defined by the appended claim, it beingunderstood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claim.

In the accompanying drawings is illustrated one complete example of thephysical embodiment of the present invention constructed accordin to thebest mode so far devised for the practical application of the principlesthereof.

In the drawin s:

Figure 1 represents a side elevation of a wire stitching machineembodying the features of my invention with certain parts broken awayand in section to more clearly illustrate structural features.

Figure 2 is an enlarged fragmentary front elevation of a standardsupporting for the clinching pos Figure 3 is a fragmentary plan viewillustrating the clinching stirrup and associated press button switch.

Figure 4 is an enlarged sectional elevation of the standard clutchmechanism, the same being indicated upon line 4-4 of Figure 1.

Figure 5 is a diagrammatic view of the electric circuit for controllingthe clutch mechanism associated with solenoid.

Referring by characters to the drawing, I indicates a goose-neck framecarrying at its neck end the usual wire reel 2 and stitching head 3which comprise the staple driving mechanism.

A bracket 4 is secured to the base of the frame carrying a trunnion 5upon which is pivotally mounted the bottom shoe of a standard staple"clinching post 6 adapted to be swung from an inclined box receivingposition into alinement with the staple driving mechanism as indicatedin dotted lines of Figure 1.

The bracket 4 has also journaled therein a stud shaft 1 carrying asocketed cam lever B, whichcamlever socket engages a stud 8, carried bythe bottom shoe portion of the pivoted clinch post. A coil spring I isconnected to the clinch post shoe and the hub portion of the cam lever8, one end of the spring being eccentrically connected with the studshaft 1 through the hub portion of the cam lever.

The coil spring I is under constant tension and tends to draw the postand cam towards each other, whereby, as shown in Fig. 1 of the drawings,the post is held at an angle away from the stitching head 3. Hence, whenthe post is swung by the stirrup 9, in alignment with said stitchinghead, it is under greater spring tension and will thus return the postto its idle position when the foot pressure is released from the stirrup9, to thus withdraw the post from its functioning to its idle position,as shown in Fig. 1 of the drawings.

The stud shaft I has also secured thereto a stirrup 9 for rocking the"clinching post. All of the above described mechanism is of standardtype and forms no part of my invention. The connecting portion 9' of thestirrup legs has pivotally mounted thereon a foot pedal Ill. The heel ofthe pedal, as shown in Figure 1 of the drawings, normally rests upon thefloor surface when the clinching post is positioned at an angle clear ofthe staple driving mechanism.

Nested within the stirrup, upon the floor surface, is an electric pushbutton I I and said push button is connected by wires I2 to an encasedsolenoid I3 suitably anchored to the frame.

The frame I also carries an electric motor I3 in belt drive connectionwith a shaft I 4, which shaft, through its coupling connections, impartsdriving power to the staple mechanism, all of which mechanism forms nopart of my present invention, but is of standard type.

As shown in Figure 4 of the drawings, the coupling connection of theshaft I4 embodies a clutch mechanism I5 which includes toggleconnections and a pivoted bell crank lever I6, the same being in linkconnection with the solenoid 1-3.

When the solenoid is energized, the clutch mechanism couples the motordriven power to the shaft I4 whereby the staple mechanism' receives itsdriving power.

As illustrated in the diagrammatic view, "Figure 5, the line wire I2enters the box containing the solenoid and from thence leads to a switch-II for manually making and breaking the circuit.

From said switch, a line wire I2 is connected to the motor I3, whichmotor is also connected by a branch wire from one of the circuit WiresIE, it being understood that the companion circuit wire I2 is connectedby albranch to the wire I2 whereby the circuits are completed. Thiselectric wiring and mechanism also forms no part of my presentinvention.

From the foregoing description .it is obvious, when a box or containeris inserted over the staple, clinching postithepost is swung'in positionfor stapling the box along its edges. This movement 'of said post iseffected by the operator placing his foot upon the stirrup pedal, asindicated in dotted lines and thereafter the pedal is pressed downwardlycausing the stirrup to follow the downward movement, whereby the post"-is manually held in its stapling position.

After accomplishing the above movement, the toe of the operator's foot,as indicated in dotted lines, may be pressed downward whereby the pushbutton II is engaged and closes the solenoid circuit to thus energizethe clutch mechanism whereby the staple driving mechanism is put intoaction and the stitching of the box will result.

Hence, it will be noted that the machine is controlled first byindependent manual foot movement followed by simply closing a pushbutton switch for bringing into action the stapling mechanism, byshifting the clutch I 5.

We claim:

In a wire stitching machine, the combination of a staple drivingmechanism, means for operating the staple driving mechanism, a clutchdevice for throwing the staple driving mechanism into and out ofoperation, a solenoid for actuating the clutching device, a pivotedclinching post associated with the staple driving mechanism, a springfor holding the post in its idle position, a cam lever for actuating thepost in opposition to its spring tension, a foot actuated stirrupcarried by the cam lever, a foot pedal pivoted thereto, and a pushbutton switch nested within the stirrup and electrically connected tothe solenoid, the switch being 'closed by foot action upon the pedal,following depression of the stirrup, to shift the clinching post inalinement with the aforesaid staple driving mecha- .nism.

NICHOLAS A. YOUNG.

PETER BREHM.

REFERENCES CITED UNITED STATES PATENTS Name Date Number Hoflert May 2,1944

